PRECURSOR DECISION FEEDBACK EQUALIZER (PDFE)

摘要

A decision feedback equalizer is provided which is capable of canceling precursor Inter-Symbol Interference (ISI) even when knowledge of future data is unavailable. A novel DFE algorithm is utilized whereby the detection signal- to- noise ratio (SNR) is increased in two aspects: the precursor contribution is eliminated and the sampling location (relative to the channel response) is positioned at th e maximum SNR location. As a result, the loop length for data transmission in a cable can be extended.